Toothbrush



FIG. 1 is a front perspective view of a toothbrush according to the new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof; and,

FIG. 6 is a top view thereof.

The broken lines immediately adjacent the solid lines represent the bounds of the claim. All of the broken lines illustrate portions of the toothbrush that form no part of the claimed design. 

CLAIM The ornamental design for a toothbrush, as shown and described. 